Safely migrate from 3ware 9650SE-8LPML to a 3ware SAS 9750-8i?Thanks for the answer. I have since then upgraded Fredbsd to 8.3 and ZFS to the latest supported version in Freebsd. It works a lot better now. From being almost unusable to working better than before the issues. Moral of the story: Make sure you use the latest available ZFS version ;)

Safely migrate from 3ware 9650SE-8LPML to a 3ware SAS 9750-8i?It is used in Raid 5. LSI said 50% chance of data loss when my host talked to them. My host thinks it is closer to 100%. Is there any good way to backup the data before making any attempt on change the card? We can access the server but its very difficult to do anything because of the interface resets. The data is still there and intact by the looks of it though.